EP0030577A1 - Procédé pour le marquage d'un élément optique - Google Patents
Procédé pour le marquage d'un élément optique Download PDFInfo
- Publication number
- EP0030577A1 EP0030577A1 EP79302906A EP79302906A EP0030577A1 EP 0030577 A1 EP0030577 A1 EP 0030577A1 EP 79302906 A EP79302906 A EP 79302906A EP 79302906 A EP79302906 A EP 79302906A EP 0030577 A1 EP0030577 A1 EP 0030577A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical element
- stuff
- dye
- lens
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims 3
- 229960004217 benzyl alcohol Drugs 0.000 claims 1
- 235000019445 benzyl alcohol Nutrition 0.000 claims 1
- 239000012768 molten material Substances 0.000 claims 1
- 239000000975 dye Substances 0.000 abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010348 incorporation Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000007654 immersion Methods 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 238000004043 dyeing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007850 fluorescent dye Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- ZAMLGGRVTAXBHI-UHFFFAOYSA-N 3-(4-bromophenyl)-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid Chemical compound CC(C)(C)OC(=O)NC(CC(O)=O)C1=CC=C(Br)C=C1 ZAMLGGRVTAXBHI-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
Definitions
- the invention relates to a method for marking an optical element.
- optical elements hereinafter referred to are made of plastics material of which polymethylmethacrylate, polyethylene, polycarbonate, cellulose-acetate, polydi- ethyleneglycolbisarylcarbonate (CR-39) and others are examples. Lenses made of such materials are widely used because of their excellent characteristics such as shock, heat and solvent resistance and their light weighto
- the present invention is intended to provide a solution to such drawbacks. It solves the problem of the mark spoiling the appearance and effectiveness of the optical element and that of the mark being easily removed. This is achieved by the incorporation of a fluorescent material in or on the whole or a part of the optical element. The mark thus incorporated is only visible under ultra-violet light.
- the incorporation of the fluorescent dyestuff may be achieved by addition to the molten plastics material prior to forming the optical element, by dyeing the finished optical element in a solution of the fluorescent dye-stuff, or by printing with a solution of the fluorescent dye-stuff in a solvent such as an alcohol.
- the advantages offered by the invention are several. Under normal conditions the marking is invisible and thus does not spoil the appearance or effectiveness of the optical element marked.
- the fluorescent dye-stuff marking may also be applied by various simple methods in addition to printing. For example direct incorporation in the molten plastics material from which the optical element is to be formed, by dyeing in an aqueous fluorescent dye-stuff solution, with or without the use of a mask or stencil; or by printing using a solution of the dye-stuff in an appropriate solvent.
- a further advantage of the invention is that unlike the ink applied by prior art printing methods where the dried ink protrudes above the lens surface the marking material used in embodiments of the present method does not protrude above the lens surface and is not removed by solvents other than those which would also solvate the lens material.
- the first of the preferred embodiments involves the addition of 0.01 - 0.00001% by weight of a fluorescent dye-stuff to the plastics material from which the optical element is to be formed.
- the mixture is then melted, homogenized and used to form the optical element according to conventional techniques.
- the fluorescent dye may be of any kind which can be dissolved homogeneously in the molten plastics material. However if the concentration of the fluorescent dye-stuff is above 0.01% by weight the fluorescent radiation emitted will be observable even under normal lighting conditions. If the concentration of the dye-stuff is below 0.00001% the fluorescent radiation emitted even when viewed under ultra-violet light will not be sufficient to be detected by human eyes.
- the concentration of the fluorescent dye-stuff in an optical element is within the limits stated, and more preferably within the range 0.001 - 0.0001% by weight, the optical element when viewed under normal amounts of sunlight or room lighting will appear the same as one containing no fluorescent dye-stuff, yet on viewing under ultra-violet light such a lens will emit fluorescent light which is easily detected by the human eye.
- the second of the preferred embodiments involves dissolving the fluorescent dye in water and the optical elements to be marked are then immersed in the dye solution and thereby dyed.
- the untreated optical elements themselves do not fluoresce under ultra-violet light, however when the fluorescent dye-stuff concentration on them is within the range 0.01 - 0.0000196 they will visibly fluoresce when viewed under ultra-violet light, but not under normal lighting conditions.
- the addition of a surfactent agent to the dye solution to act as a dispersion agent is preferable and the solution temperature should be between 60°C and 95°C. The preferred temperature when dyeing polymethylmethacrylate is 70°C and for CR-39 is 80°C.
- the duration of immersion in the solution is between 10 seconds and 30 minutes the exact time being chosen according to the fluorescent dye-stuff concentration, the solution temperature and the materials used in order to fulfill the objects of the invention.
- the optical elements to be dyed may either be completely dyed or dyed using masks or stencils to form symbols, letters or other marks.
- the entire optical element is immersed in the fluorescent dye-stuff solution and the effect when the optical element is subsequently viewed under ultra-violet light is the same as if the dye had been dissolved in the molten lens plastics material.
- a convenient mask or stencil is affixed to the optical element to be dyed and the optical element then dyed. This provides a convenient method of affixing reference numbers to optical elements for example, the diopter of a lens to the lens itself.
- the third of the preferred embodiments involves printing marks onto the optical element and has the same effect as dyeing marks onto the optical element.
- Printing methods in the prior art involve printing on lenses using a non-water-soluble ink which results in the ink protruding a certain height above the lens surface and in it being easily dissolved by an organic solvent.
- the fluorescent dye is dissolved in alcohol.
- a fluorescent dye-stuff concentration of 0.05 - 10% by weight is preferable and the fluorescent dye-stuff and solvent are chosen to ensure complete dissolution of the fluorescent dye-stuff.
- Alcohols such as methanol, ethanol, isopropanol, benzylalcohol, etc. can be used though isopropanol is preferred due to the solvency of the dye in it and its rate of evapouration. It is also preferable to add 1096 by weight of glycerin to the alcohol as this lowers its rate of evaporation. It is also possible to use any other solvent providing the fluorescent dye-stuff will dissolve in it and that it does not adversely affect the plastics material.
- the fluorescent marking material thus prepared is absorbed on a porous rubber stamp which is then pressed onto the optical element surface to be printed. Only such pressing makes the ink remain on the optical elements surface.
- the optical element is then dried in a dryer at 60 - 90°C and preferably at about 80°C to encourage the absorption of the fluorescent dye-stuff into the lens. The dried material does not project from the surface of the lens.
- the markings on a lens so marked will only be visible under ultra-violet light and will not be removed by wiping the lens with water or an organic solvent (other than one which dissolves the optical element plastics material itself).
- Diethyleneglycolbisarylcarbonate (CR-39) is used as a lens material and to this is added diisoproperoxidi- carbonate (sold as Chinubin-P by Ciba Greigy), as an ultra-violet absorption agent and 0.001% by weight of a fluorescent dye-stuff "White fluor B” (sold by Sumitomo Chemical Co).
- a fluorescent dye-stuff "White fluor B" (sold by Sumitomo Chemical Co).
- a lens produced in this way appears the same as a normal lens.
- the whole lens emits fluorescent light which is visible by the human eye.
- the addition of the fluorescent dye-stuff does not substantially affect the ultra-violet or visible portion of the transmission rate curve for the lens.
- a lens of polymethacrylate when dyes in the same manner as the lens in Example 2 but omitting the marking with acetone will produce the same results.
- Lenses provided with markings by the above mentioned methods of the invention are thus easily distinguished from lenses from other sources. Care :(such as cleaning) of the lenses without damaging the marks presents little problem.
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Vascular Medicine (AREA)
- Printing Methods (AREA)
- Coloring (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE7979302906T DE2966846D1 (en) | 1979-12-14 | 1979-12-14 | Method for marking an optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/102,348 US4329378A (en) | 1979-12-11 | 1979-12-11 | Method for marking an indication to the lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0030577A1 true EP0030577A1 (fr) | 1981-06-24 |
| EP0030577B1 EP0030577B1 (fr) | 1984-03-21 |
Family
ID=22289388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79302906A Expired EP0030577B1 (fr) | 1979-12-11 | 1979-12-14 | Procédé pour le marquage d'un élément optique |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4329378A (fr) |
| EP (1) | EP0030577B1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082026A2 (fr) * | 1981-12-16 | 1983-06-22 | Japan Synthetic Rubber Co., Ltd. | Procédé de fabrication d'articles façonnés colorés |
| DE3544627A1 (de) * | 1985-12-17 | 1987-06-19 | Rodenstock Optik G | Brillenglas aus einem kunststoffmaterial mit einer fluoreszierenden markierung |
| EP0560586A1 (fr) * | 1992-03-13 | 1993-09-15 | Menicon Co., Ltd. | Méthode de production de lentille de contact munie de marque identificatrice pénétrant dans la lentille |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158235A (en) | 1981-03-26 | 1982-09-30 | Toray Ind Inc | Plastic molding |
| US4447474A (en) * | 1982-08-30 | 1984-05-08 | Neefe Charles W | Method of selectively tinting soft contact lenses |
| US4716501A (en) * | 1986-10-21 | 1987-12-29 | Mckee John M | Indicator light assembly with fluorescent lens |
| CA2007611A1 (fr) * | 1990-01-11 | 1991-07-11 | Faye Tanefsky | Verres portant un message subliminal |
| GB9015471D0 (en) * | 1990-07-13 | 1990-08-29 | Dowty Seals Ltd | Articles composed of rubber or polymer materials |
| DE4029167A1 (de) * | 1990-09-14 | 1992-03-19 | Bayer Ag | Verfahren zur kennzeichnung von kunststoffen |
| US5936704A (en) | 1997-12-22 | 1999-08-10 | Gabrielian; Grant | Marked contact lens bearing optical marking element |
| US5949535A (en) * | 1998-03-26 | 1999-09-07 | Hall; Gary W. | Protective rating system for eyewear |
| US6024448A (en) * | 1998-03-31 | 2000-02-15 | Johnson & Johnson Vision Products, Inc. | Contact lenses bearing identifying marks |
| US6203156B1 (en) | 1998-03-31 | 2001-03-20 | Johnson & Johnson Vision Care, Inc. | Contact lenses bearing marks |
| FR2792073B1 (fr) * | 1999-04-06 | 2001-07-06 | Essilor Int | Procede de determination de l'aptitude a la coloration sans defaut d'un article moule transparent en materiau polymere et article obtenu |
| US7137124B2 (en) * | 2001-10-05 | 2006-11-14 | International Business Machines Corporation | Storage area network methods and apparatus for storage device masking |
| US20030152693A1 (en) * | 2002-02-12 | 2003-08-14 | Su Kai C. | Methods of applying a coating to an optical surface |
| JP4550439B2 (ja) | 2003-02-28 | 2010-09-22 | 東芝メモリシステムズ株式会社 | Ｅｃｃ制御装置 |
| US7566473B2 (en) | 2003-11-25 | 2009-07-28 | Vin Mark Security Services, Llc | Vehicle identification marking system |
| US7455877B2 (en) * | 2003-11-25 | 2008-11-25 | Vin Mark Security Services, Llc | Vehicle identification marking system |
| US6974470B2 (en) * | 2004-02-27 | 2005-12-13 | Kao Corporation | Heat-generative, steam generation sheet for face |
| US8486711B2 (en) | 2004-10-22 | 2013-07-16 | Bayer Materialscience Llc | Highly fluorescent markers for fluids or articles |
| WO2007075231A1 (fr) * | 2005-12-28 | 2007-07-05 | Illinois Tool Works Inc. | Procédé et système pour imprimer des marques d'identification |
| US8740382B1 (en) | 2010-09-30 | 2014-06-03 | Cognex Corporation | System and method for automatically tracking a contact lens in a wearer's eye |
| US20120200847A1 (en) | 2011-02-09 | 2012-08-09 | Hall Gary W | Protection factor rating system for protective eyewear |
| EP3293565B1 (fr) * | 2016-09-07 | 2024-11-06 | Essilor International | Verre de lunettes muni d'un marquage permanent |
| EP4512628A1 (fr) * | 2023-08-21 | 2025-02-26 | Ritter GmbH | Produit en plastique et procédé d'application d'une impression sur un produit en plastique |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1370642A (fr) * | 1962-05-31 | 1964-08-28 | Ceskoslovenska Akademie Ved | Lentille de contact oculaire colorée et procédé pour sa fabrication |
| FR1400566A (fr) * | 1964-04-17 | 1965-05-28 | Procédé et dispositif de sélection, d'ajustage et de centrage des lentilles ophtalmiques | |
| FR2355642A1 (fr) * | 1976-06-24 | 1978-01-20 | Toppan Printing Co Ltd | Methode de teinture ou d'impression de resine hydrogel |
| FR2373582A1 (fr) * | 1976-12-13 | 1978-07-07 | American Optical Corp | Articles incolores en polycarbonate |
| FR2406217A1 (fr) * | 1977-10-14 | 1979-05-11 | Essilor Int | Procede pour le marquage d'une lentille ophtalmique en matiere organique, et une telle lentille ainsi marquee |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB569920A (en) * | 1942-06-23 | 1945-06-14 | British Celanese | Improvements relating to transparent materials |
| US3700487A (en) * | 1971-02-23 | 1972-10-24 | American Optical Corp | Polycarbonate substrate with durable,abrasion and scratch-resistant,antifogging coating |
| US4186020A (en) * | 1974-11-04 | 1980-01-29 | A. B. Dick Company | Fluorescent ink for automatic identification |
-
1979
- 1979-12-11 US US06/102,348 patent/US4329378A/en not_active Expired - Lifetime
- 1979-12-14 EP EP79302906A patent/EP0030577B1/fr not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1370642A (fr) * | 1962-05-31 | 1964-08-28 | Ceskoslovenska Akademie Ved | Lentille de contact oculaire colorée et procédé pour sa fabrication |
| FR1400566A (fr) * | 1964-04-17 | 1965-05-28 | Procédé et dispositif de sélection, d'ajustage et de centrage des lentilles ophtalmiques | |
| FR2355642A1 (fr) * | 1976-06-24 | 1978-01-20 | Toppan Printing Co Ltd | Methode de teinture ou d'impression de resine hydrogel |
| FR2373582A1 (fr) * | 1976-12-13 | 1978-07-07 | American Optical Corp | Articles incolores en polycarbonate |
| FR2406217A1 (fr) * | 1977-10-14 | 1979-05-11 | Essilor Int | Procede pour le marquage d'une lentille ophtalmique en matiere organique, et une telle lentille ainsi marquee |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082026A2 (fr) * | 1981-12-16 | 1983-06-22 | Japan Synthetic Rubber Co., Ltd. | Procédé de fabrication d'articles façonnés colorés |
| EP0082026A3 (en) * | 1981-12-16 | 1983-07-20 | Japan Synthetic Rubber Co., Ltd. | A process for producing coloured shaped articles |
| DE3544627A1 (de) * | 1985-12-17 | 1987-06-19 | Rodenstock Optik G | Brillenglas aus einem kunststoffmaterial mit einer fluoreszierenden markierung |
| EP0560586A1 (fr) * | 1992-03-13 | 1993-09-15 | Menicon Co., Ltd. | Méthode de production de lentille de contact munie de marque identificatrice pénétrant dans la lentille |
| US5580498A (en) * | 1992-03-13 | 1996-12-03 | Menicon Co., Ltd. | Method of producing contact lens with identifying mark permeating into lens |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0030577B1 (fr) | 1984-03-21 |
| US4329378A (en) | 1982-05-11 |
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